/*
 * Copyright 2013 Sigurd Randoll <srandoll@digiway.de>.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package de.digiway.rapidbreeze.server.model.config;

import de.digiway.rapidbreeze.server.infrastructure.objectstorage.ObjectStorage;
import de.digiway.rapidbreeze.server.infrastructure.objectstorage.ObjectStorageFactory;
import de.digiway.rapidbreeze.server.infrastructure.persistence.ConfigurationRepositoryStorage;

/**
 * Factory to get {@linkplain ConfigurationRepository} instances.
 *
 * @author Sigurd Randoll <srandoll@digiway.de>
 */
public class ConfigurationRepositoryFactory {

    private static ConfigurationRepository configuration = null;

    /**
     * Retrieves a singleton instance of a {@linkplain ConfigurationRepository}
     * instance.
     *
     * @return
     */
    public static ConfigurationRepository getInstance() {
        if (configuration == null) {
            ObjectStorage storage = ObjectStorageFactory.getInstance();
            configuration = new ConfigurationRepositoryStorage(storage);
        }
        return configuration;
    }
}
